1151442209 has 2 divisors, whose sum is σ = 1151442210. Its totient is φ = 1151442208.

The previous prime is 1151442139. The next prime is 1151442251. The reversal of 1151442209 is 9022441511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 734139025 + 417303184 = 27095^2 + 20428^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151442209 - 2²⁰ = 1150393633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1151441209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575721104 + 575721105.

It is an arithmetic number, because the mean of its divisors is an integer number (575721105).

Almost surely, 2^1151442209 is an apocalyptic number.

It is an amenable number.

1151442209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151442209 is an equidigital number, since it uses as much as digits as its factorization.

1151442209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1151442209 is about 33932.9074645837. The cubic root of 1151442209 is about 1048.1273375491.

The spelling of 1151442209 in words is "one billion, one hundred fifty-one million, four hundred forty-two thousand, two hundred nine".